– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 am Sat 19 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sat 19 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Warm (max 22°C on Sun afternoon, min 12°C on Mon night). Wind will be generally light. | Days 4–6 Weather SummarySome drizzle, heaviest during Wed afternoon. Very mild (max 16°C on Tue afternoon, min 9°C on Wed night). Wind will be generally light. | |||||||||||||||||
Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | | | |  | | |  |  | | | | | | |
some clouds | some clouds | clear | clear | clear | clear | clear | clear | some clouds | some clouds | clear | rain shwrs | rain shwrs | rain shwrs | rain shwrs | some clouds | some clouds | some clouds | |
Cloud base (m) | 7100 | 9450 | 9600 | 7600 | 6800 | 5950 | 700 | 1800 | 1650 | 5800 | 5100 | |||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 0.2 | 0.1 | 0.6 | 0.3 | — | — | — |
max °C | 18 | 20 | 16 | 20 | 22 | 17 | 17 | 19 | 14 | 15 | 16 | 11 | 12 | 13 | 10 | 12 | 15 | 11 |
min °C | 14 | 20 | 14 | 15 | 22 | 14 | 14 | 18 | 12 | 12 | 15 | 11 | 10 | 13 | 9 | 9 | 14 | 10 |
chill °C | 14 | 20 | 14 | 15 | 22 | 14 | 14 | 18 | 12 | 12 | 15 | 11 | 10 | 13 | 9 | 9 | 14 | 10 |
Freezing level m | 3800 | 3750 | 3900 | 3950 | 4000 | 3800 | 3500 | 3450 | 3450 | 3250 | 2950 | 2400 | 2150 | 2300 | 2300 | 2350 | 2650 | 2700 |
 | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — |
 | — | 7:12 | — | — | 7:09 | — | — | 7:07 | — | — | 7:06 | — | — | 7:04 | — | — | 7:01 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Warm (max 22°C on Sun afternoon, min 12°C on Mon night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Some drizzle, heaviest during Wed afternoon. Very mild (max 16°C on Tue afternoon, min 9°C on Wed night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.